I have managed to freeze about two/thirds of them. I started out with the huge ones, so the ones that are left are normal-to-small sized.
I had intended to try storing some of them in sand, but I can tell these sweet potatoes are not going to keep very long. I've already found a couple that have started to rot. Perhaps they didn't get cured properly. So today I froze six more pints of mashed sweet potatoes, and will probably do that many tomorrow. I made a crustless sweet potato pie, too. I love crust, but let's face it, that Crisco puts a lot of extra calories in there.
To make a crustless sweet potato pie, just use your favorite pumpkin-pie-filling recipe, substituting tw cups of sweet potatoes, and add 1/2 cup of Bisquick to the ingredients. Spray Pam on a pie plate, pour the filling directly in it, and bake at 350 for 45 minutes to an hour. No, there wasn't a mouse at the pie. I had a taste to make sure it was good. If you served this and didn't tell people the difference, they would think they were eating pumpkin pie.
I have between thirty and forty pints frozen. I figure if I still have a lot left when spring comes, I won't plant sweet potatoes next year.
So, after I freeze some tomorrow, I will be throwing the rest away. That is, unless some local person would like the remainder. Anybody is welcome to them. Just remember, they aren't going to keep long.